Edger shifter



Dec. 8, 1931. w, G. HAGMAIER r-:T AL

EDGER SHIFTER Original Filed May 18, 1928 Patented` Dec. 8, 1931 f UNITED STATES,

PATENT OFFICE WILLIAM G. HAGMAIER, F WEST ALLIS, AND ERNEST C. SHAJV, OF MILWAUKEE, WIS- CONSIN',` ASSIGNORSyTO lALLIS-CHIllrIEIEtS IYIANUFACTURING COMPANY, OF MIL- WAUKEE, WISCONSIN, A. CORPORATION OE' DELWARE EDGER SHIFTER rllhe present invention relatesgenerally to improvements in saw' 'inill machinery, and

other objects and advantages will appear relates more' specifically to improvements in the construction and operation of saw mill edgers.

. ofthe invention is vto provide simple, compact and efficient mechanism for efl'ecting'adjustment or lateral shifting of the individual saws'of'anedger. Another object of the inventioii is L to provide improved instrumentalities for facilitating. 'removal' of edger saws or 'the like, from van arbor.A Stillfanother ob-v ject "of the invention is to provide aii edging machine'whi'chis especially adapted to withstaiidthe wear Iandftear of hard usage resulting from relatively heavy work. These and from the followingdescription.

AThis application `is a division of our application Serial Number 278,698, 'filed May. 18, 1928, Patent Number :1,7 88,57 4,

A clear'conc'eption of embodiments of the various features constituting the present im proveinent aiidfof the inode of constructing and of operating edgers built in accordance therewith, may be had by referring to the drawings accompanying and forming a part of this specification in which like reference characters designate the same or similar parts :in the various views.

Fig.` l is a central vertical section through theedger.

Fig. 2 .is an venlarged transverse vertical section through one of the saw shifting mechanisms of the edger, inthe plane of the -i cooperating saw, the section being interrupted for the -sake of clearness.

. Fig. 3 is a vfront detail view of a shifter, in

plac .The improvededger comprises in general amain frame consisting of end frames 4 and YOriginal application filed May 18,1928, Serial No. 278,693. Patent No. 1,788,574. Divided and this application filed June 26, 1930.

Serial No. 463,974.

channel bars 29, interconnecting the end frames; a rotary saw arbor 8 mounted hori- Mentally in hearings associated with the end frames 4; a plurality of circular saws 2 rota able by the arbor 3 and adjustable longitudinally therealong; mechanism for inde-` pendently adjustingy the saws 2 along the arbor 3; means for transporting the material being cut toward and away from the saws 2; a pair of j ess rolls 8, 9 coacting 'with the n'laterial to urge the same against the transporting means; and mechanism for adjusting and for cushioning the press rolls. rlhe arbor and the saws 2 are rotatable in a well known manner by means of transmission ii'iechanism or a motor associated with one end of the arbor, and the saws are rotatable in a clockwise direction as viewed in Fig. l. i

The improved saw shifting or adjusting mechanism shown in detail in F ig. 2 coni` prises a series of shifter brackets 2li movable longitudinally of the channel bars 29, 8O and carrying shifter arms 7 having bifurcations straddling the saws 2 and provided with blocks 26 which are engageable with the sides of the saw blades during shifting. Each of the brackets 24- is provided with laterally cX- tending arms and 6l. The upper arm 60 carries a guide roller 27 cooperating with an upper guide bar 3l i; ecured to a guide bracket associated with the channel bar 29, and the lower arm Gl carries a similar guide roller 25 cooperating with another guide bar 3l associated with the bracket 32, as shown in Fig. 2. The portion of the bracket 24C closely adjacent to the saw, is provided with a shoe lll which rests upon the upper surface of the channel bar. This shoe also carries a roller 19 which coacts with the inner side surface of the channel. bar 30 and forms means for preventing outward displacement of the shifter bracket 24. The rollers 19, 25, 27 prolvide a three point anti-friction support for each of the shifter brackets 24. The lower portion of the upper flange of the channel bar 30 is provided with a notched strip il with thc notches of which a locking bar 39 is engageable in order to positively lock the shifter in adjusted position closely adjacent to the saws. The locking bar 39 is normally y urged into locking engagement by means of a spring 40., and may be retracted trom en gagement with the strip 41 by means of a handle 'piv'otally associated with the shift- 5 er handle 28 and operativel connected to the rod 39 by means of a link 38.

The brackets 24; are laterally shitable-- along ithechannel bars 29, 30hy virtue of their cooperation with a constantly traveling power driven chain 33 having upper and lower stretches or runs 37, SG-respectively, extendinglongitudinally in iront of the edger arid-passing' through 'tranjsverde kopei)ings in the bracketsr 24; It will be apparent-that when 'the chain A33 isdriven, the upper run 37=wil=lltravel in one direction, and the lower- 1ua36-will 'simultaneouslyftravel in the oppol site direction, so thatl if a bracket 24:` is con-1 `nectedjwith .either4 ofthe chain runs, may 2Otbe.,automaticalrly shifted in a. desired direction, thereby` simultaneously shifting the co'rrespo-ndingsaws2.along .the arbor 3. Thev shifter actuatingklever .28A pivotally asror ciatedfwiththe bracket 24 and extendsA be- V25/#tween the chain. runaYThelever 2S is pro-' vided withclamping Y, grip blocks y' which upon, movement ofthe lever28 1n a vertical planearo engageable with the adjacent surf acesof the chain runs 36, 37. The bracket 2li i imisl provided .with other grip blocks 62 located in.fverticalfalinement with the gripblocks 35 of the lever 28, and cooperable with vtheouter surtacesjof the chain runs 37, 36. The -arrangement is Vobviously such/that` when .the

Y .35leverr28.isshifted verticallyand thelocking -barBQhasbL-en retracted, either of the chain runsf.36,'37= maybe Llirmly'l gripped between the;acljacent grip, blocks of the lever`28and r ofthe bracket 2li, thereby causing the-bracket mitoshiftlaterally. Byv virtue of the antifriction supports Yafforded by the rollers 19, 25,

27,"the.brackets 24 may also be readily'v shifted 1 manually by-.merely applying horizontal presn vsuretol the levcrs'28. The degree voflshiifting' fllmay bedea'dily determi-ned by "means of a gage 21 disposed at thefront of the mechanisin. v Y Y Y The mechanisi 'for transporting themate Y rial towardv and away yfrom the saws 2,.com-

` rollsto. thereby insure positive transportation of..the material. Thepress rolls .8, 9 are s swingably' supported from pivots 15 by meansV of arms 10,11 andmay beraised away 'from the .teedLroll-sbyany suitable means.

A cushioningn.device for preventingfree falling-of the rollsfisprovided at thermedial device comprises a cylinder 13 pivotally' as portionsoffthe press rolls.A This cushioningv sociated at its medial portion With aV bracket '17 which is rigidly secured to one of the press roll carrier arms 10. Located.` within the cylinder 13 is a piston 20 secured to' a pistodY rod 12, 'the outer vend of Which is secured to a pivot block 18. The piston 20 is provided with. one or more A'relativelvy; small through l openingsv 23 fory permittingfthef gradual` passageofluid conlined'within the cylinder 13, from one side of the piston 2O to the other.

Stuliing-boxes 22 cooperate with the rod 12` to prevent .escape of lluid from within the ciat'ed witha bracket 17 rigidly attachedto the press roll carrier arm'v l1. The mecha- 'nism Yobviously,functions Atacheck'the fall A. of the press rolls"8,"9 and to bring'th'e'se' rolls* into gradual 'e'ngagenrent"withthe` material advancing over the feed rolls The press rolls 'i 8,9 are rotatable aboutshafts 16. supported in bearingsinthe carriera-rms 10,711", and

vertical guide rollers 58l`adjacentthe endsof 'Y the frame serve to iprevent'entering material from strikingtlie frame.

Located bewaarde medial pori-.ieder the edger,`is a transverse shaft52 which pivotal# Y ly supports a bridge4 51K `With the ed'gerin`- operation, the bridge "lies "flat againstlA the door asshwn in solid lines in Fg. j1,but`the bridge maygbe'raised Ias lshe'wvngifn dot'fand dash; in :order to?. provide a Vterrlporarysup` j port' for the arbor 3 Whilethe saws 2 are being removed fromlv an end thereofs' 'Ihef` bridge" l manipulating mechanisinv comprises a lever. rod 56 having-'a threaded-end with which an adjustable hand yWheel l'coa'cts; ,Theh'and wheel 54 is connectedwith 'a collar 5,55 which5 maybe brought' into engagement with: bracket 53finord`er 'to raise 'the 'bridge'l into contact jWith the' arbor 3 'after :having beenrighted.

I During normal' operation of thel edgerjthesaws L2 ,are s et inthe.y proper position rela-k tively to the arbors-S,"thispreferablygbeing accomplished .while the saws andY the arbor are n rotz'i'tihg.;l Thejmateriallto'be sawed is then advanced 'between 'the vfront feed rolls 6 'andthe corresponding press 'roll "9,:Whereupon it is fed'rearwardlyA-past the saws 2 and' betweenth'e rearfe'edrolls and the press roll 8,' being, delivered'ffrom thedatterin" sawed condition;y

, if a is desired w ddjda onel 0rmere-0fl thesaws 2 longitudinally'joftlie arbor 3,1itl

is only necessary forthef'operator to grasp the lever 28 and the handle'il and toi-nitiall lyrele'ase the lock retracting tlre'loeking rod .39." Depending upon" the'directionrin' which the. released', saw .is Ito be' shifted",l the operator subsequently either raises v'or lowers the lever 28thereby 'causing fthe chain 331 to automatically 'shiftvith'e' saw '2 in the desired direction until the shifting motion vis stopped"i byreturn ofthe lever 28""00'k neutral position. The adjusted' saw m'a5T then be locked inthe new position by release of the lever 34, in an obvious manner. It will be apparent that the guide rollers 19, 25, 27 permit rapid shifting of the saws either by power or manually with minimum waste of effort, and the gage 21 provides simple means for determining the cut. The shoes 14 and rollers 19 carried by the brackets 24 closely adjacent to the saws, obviously prevent possible displacement of the shifter mechanism so as to produce buckling of the saws, and such buckling is also avoided by locating the locking mechanism or strip 41 closely adjacent to the saws. The three point support afforded by the rollers 19, 25, 27 eliminates all danger of movement of the shifters, and insures absolute rigidity thereof.

The bridge 51 provides simple and e'ective means for enabling rapid and safe insertion and removal of saws 2 without disturbing the arbor 3, and the rollers 58 insure proper delivery of the material to the machine.

It should be understood that it is not desired to limit the invention to the exact de- Y tails of construction and operation herein shown and described for var ious modifications within the scope of the claims may occur to'persons skilled in the art.

It is claimed and desired to secure by Letters Patent:

1. In combination, a saw, an arbor rotatably supporting said saw, a frame, a shifter movable along said frame to move said saw along said arbor axis, and a three point roller support for said shifter, one of said rollers being located in substantially the plane of said saw and coacting with a rear .surface of said frame.

2; In combination, a saw, an arbor rotatably supporting said saw, a frame, a shifter' movable along said frame to move said saw along said arbor axis, al roller carried by said shifter and coacting continuously with said frame closely adjacent to said saw, and a lock for said shifter located closely adjacent to said roller.

3. In combination, a saw,lan arbor rotatably supporting said saw, a frame, a shifter movable along said frame to move said saw along said arbor axis, a roller carried by said shifter in substantially the plane of said saw and coacting continuously with a rear surface of'said frame closely adjacent to said saw, and other rollers carried by said shifter on opposite sides of said plane and coacting with said frame remote from said saw.

4. In combination, a saw, an arbor rotatably supporting said saw, a frame, a shifter movable along said frame to move said saw along said arbor axis, a roller on said shifter bearing on a rear surface of said frame, and other rollers on said shifter bearing on a front surface'of said frame.

5. In combination, a saw, an arborrotatably supporting said saw, a frame, a shifter movable along said frame to move said saw along said arbor axis, a roller on said shifter bearing on a rear surface of said frame, other rollers on said shifter bearing 7b 

